I understand, I can suggest you to Jirachi on Lucario but Terrakion can be awesome for your team after and salamence is essential, come to counter Reuniclus without changing Hydreigon is very difficult because should mostly change the team, then I'm talking about of Latios/Latias Life Orb, so Skarmory can do anything even with Rotom because he can take a Draco Meteor and then you specifies with a good mindgame but if the opponent is not a noob, it can easily anticipate.
Alakazam has Magic Guard, It is immune against Stealth Rocks/Spikes so the opponent can switch to come after, you'll be forced to sacrifice a Pokémon to come on him.
Alakazam has Magic Guard, It is immune against Stealth Rocks/Spikes so the opponent can switch to come after, you'll be forced to sacrifice a Pokémon to come on him.